[GRASS-dev] ERROR: Cairo_draw_bitmap: Failed to create source

[Glynn Clements]

Markus Neteler wrote:

> [neteler at localhost ~]$ grep cairo_format_stride_for_width
> grass64/lib/cairodriver/*
> [neteler at localhost ~]$ grep cairo_format_stride_for_width
> grass65/lib/cairodriver/*
> [neteler at localhost ~]$ grep cairo_format_stride_for_width
> grass70/lib/cairodriver/*
> grass70/lib/cairodriver/Draw_bitmap.c:    stride =
> cairo_format_stride_for_width(CAIRO_FORMAT_A8, ncols);
> 
> So, only in 7.

Ah; you might try backporting r34923, r35242 and r35255.

> >> ERROR: write_image: unknown file type: .pdf
> >
> > That error message is from the PNG driver, which implies that GRASS
> > was built without cairo support.
> 
> Actually, I compiled with cairo support:
> 
> grep cairo grass70/conf_grass70_64bit_pentium.sh
>   --with-cairo \

AFAICT, the problem is due to the merge of lib/raster into
lib/display. lib/display/Makefile needs the following patch to enable
cairo:

--- lib/display/Makefile	(revision 38759)
+++ lib/display/Makefile	(working copy)
@@ -4,6 +4,8 @@
 	$(HTMLDRIVERLIB) $(RASTERLIB)
 EXTRA_INC = -I../driver
 
+include $(MODULE_TOPDIR)/include/Make/Vars.make
+
 ifneq ($(USE_CAIRO),)
 EXTRA_LIBS +=  $(CAIRODRIVERLIB)
 EXTRA_CFLAGS += -DUSE_CAIRO

-- 
Glynn Clements <glynn at gclements.plus.com>